# John

Questions and answers by visitors named John

## Questions

8. ### A stone is dropped from the upper observation deck of a tower, 200 m above the ground. (Assume g = 9.8 m/s^2.)

a)Find the distance (in meters) of the stone above ground level at time t. b)With what velocity does it strike the ground? (Round your answer to

9. ### 3. Imagine a scenario where an animal’s force is pushing itself forward 5 N. Friction is pushing it 4 N backward. Gravity is pushing it 10 N down. And the animal is pushing itself 10 N Up. Describe the movement of the animal.

A. It only moves forward

10. ### Parenthetical expressions include information that may be helpful but are not essential to the meaning of a sentence. They are de-emphasized by ________.

A. dashes B. parentheses C. commas D. brackets I'm not really understanding this question. It has to be

13. ### What items do the Mapuche make that still have great value to the Spanish?

There is more than one correct answer choice. Be sure to select all that apply. leather textiles ponchos pottery A and D?

59. ### A: How many boys and girls are there in the park?

B: There are five boys and girls in the park. --------------------- What is the meaning of B? Does it mean that there are only 5 people including boys and girls? Or does it mean that there are 10 people; 5

Part

61. ### The position of a particle moving along the x-axis at time t > 0 seconds is given by the function x(t) = e ^ t - 2t feet.

a) Find the average velocity of the particel over the interval [1,3]. b) In what direction and how fast is the particle moving at t= 1

63. ### A woman makes n baskets and sells them all at the same price

A) if she sells all but three of the basket , she will get #11,400 .express the selling price of a basket in terms of n B) if she makes three more basket and sells them all , she will get #15000

64. ### Which of the following is always true about a reaction at equilibrium?

A. The concentration of the products is not equal to the concentration of the reactants. close B. The concentration of the products is equal to the concentration of the reactants. C.

65. ### During which stroke of a four-stroke internal combustion engine is work done by the system of gases?

A. Power stroke B. Intake stroke C. Compression stroke D. Exhaust stroke It isn't C because work is done to and not by

66. ### Why does a weather balloon pop if it goes too high?

A. The pressure in the balloon decreases as the temperature increases. B. The pressure in the balloon increases as the volume decreases. C. The volume of gas increases as the pressure decreases with

68. ### What is the maximum mass (in grams) of each of the following soluble salts that can be added to 120 mL of 0.050 M BaCl2 without causing a precipitate to form? (Assume that the addition of solid causes no change in volume.)

(a) (NH4)2SO4 × 10 g (Enter your

69. ### which of the following sentences is punctuated correctly?

A. The horse rode to our house, the beach, and around the church, before he started to tire. B. The strong heavyset fighter won his first fight, and he was featured in the newspaper. C. The ladies's

70. ### What is the equilibrium constant for the

reaction taking place at room temperature (T = 25◦C) in the battery Zn(s)| Zn2+(aq)|| Ce4+(aq)| Ce3+(aq) ? Assume that the number of electrons transferred in the reaction is n = 2. Zn2+ + 2 e − → Zn E ◦ red =

71. ### Given the following vectors, where Vector A is 6.3 meters and Vector B is 3.5 meters, determine the magnitude of the following vector sums: A+B, A-B, B-A

I tried to do magnitude such as A+B = square root (6.3)^2+(3.5)^2 = 7.2 then A-B = square root

73. ### Antiques ‘R’ Us is a mature manufacturing firm. The company just paid a dividend of $11.45, but management expects to reduce the payout by 4.5 percent per year, indefinitely. Required: If you require a return of 11 percent return on this stock, what 74. ### Points$D$,$E$, and$F$are the midpoints of sides$\overline{BC}$,$\overline{CA}$, and$\overline{AB}$, respectively, of$\triangle ABC$. Points$X$,$Y$, and$Z$are the midpoints of$\overline{EF}$,$\overline{FD}$, and$\overline{DE}$, respectively. 75. ### No idea where to start The cost in dollars of producing x units of a particular camera is C(x) = x2 - 10000. (10 points) Find the average rate of change of C with respect to x when the production level is changed from x = 100 to x = 101. Include units in 76. ### The top of a 13 foot ladder is sliding down a vertical wall at a constant rate of 4 feet per minute. When the top of the ladder is 5 feet from the ground, what is the rate of change of the distance between the bottom of the ladder and the wall 77. ### To convert miles per hour to feet per second, which conversion factor would not be used? a. 1 hr/60 min b. 1 min/60 sec c. 5280 ft/1 mi d. 1 mi/5280 ft 78. ### A block of mass m = 5.2 kg is released from rest at a height of H = 4.0 m on a curved frictionless ramp. At the foot of the ramp is a spring whose spring constant is k = 192.0 N/m. What is the maximum compression of the spring, x? After the spring reaches 79. ### New York and Pennsylvania have progressive toll roads. Upon entering the toll road the driver receives a ticket marking the location and time of entrance. Upon exiting the mileage is computed and the driver pays the toll. Which of the following would you 80. ### 10 friends share 7 dollars,what is the fraction? 81. ### Maximize P = 4x + 20y subject to these constraints: 2x + 15y ≤ 700 5x + 10y ≤ 1150 5x + 5y ≤ 1000 4x + 15y ≤ 980 x ≥ 0, y ≥ 0 Maximum value for P = ?. This value of P occurs when x = ? and y = ? If u1, u2, u3, and u4 represent the slack 82. ### The t distribution should be used when ___. the sampling population is not normal the sampling population is unimodal The sampling distribution is normal and the population standard deviation is unknown the population standard deviation is known 83. ### An electron in a certain atom is in the n = 2 quantum level. List the possible values of (cursive L). And for each value of (cursive L), list the possible values of m(cursive L) that it can have. For each of the areas above that say (cursive L), this means 84. ### find z such that 5.2% of the standard normal curve lies to the left of z 85. ### A light beam strikes a piece of glass at a 60.00° incident angle. The beam contains two wavelengths, 450.0 nm and 700.1 nm, for which the index of refraction of the glass is 1.4824 and 1.4750, respectively. What is the angle between the two refracted 86. ### How many different sums of money can be formed from one$2 bill, three $5 bills, two$10 bills, and one \$20 bill?

the answer at the back of the book is 23, but i don't know how to solve it.

98. ### Why are the Galapagos Islands important?

There is more than one correct answer choice. Be sure to select all that apply. The islands have highly profitable resources that Ecuador uses. When visiting the islands, Charles Darwin was inspired to develop his

100. ### What is the value of the greatest of four consecutive integers if the least minus twice the greatest equal 8?

Please show the work so I can understand how to complete the problem - thank you